JPH0355169B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an air filter device, and particularly to an air filter device suitable for removing even minute dust and odors.

[Background of the invention]

In electrical equipment such as air conditioners that have a blower, an air filter is installed in a part of the ventilation path to remove dust, with a mesh made of synthetic resin threads fixed to a synthetic resin frame by ultrasonic welding. . However, this air filter has the disadvantage that although it can remove large dust such as cotton dust that does not pass through the mesh, it cannot remove microscopic dust such as pollen that has a negative effect on the human body. Furthermore, if the source of the odor is in a room where an air conditioner or the like is installed, the air is circulated by the blower, causing the odor to fill the room.

[Purpose of the invention]

An object of the present invention is to provide an air filter device that purifies the air in a room by removing minute dust and odor, thereby creating a more comfortable and healthy living space.

[Summary of the invention]

A first filter having a net through which air from the intake port of the air conditioner flows is disposed in front, a second filter having a removably attached charged net and an activated carbon net is disposed behind the first filter; teeth,
An air filter device that is smaller than the mesh of the first filter.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. 1 is a cabinet which also serves as a casing for the blower, 2 is a blower, 3 is a heat exchanger, 4 is a dew tray for receiving dew condensed in the heat exchanger 3, and each is housed in the cabinet 1, and 5 covers all of these from the front. It is a makeup cover. The decorative cover 5 integrates the suction port 5a and the discharge port 5b to form a ventilation path together with the cabinet 1, and the blower 2 causes air to flow in the direction shown by the arrow. Reference numeral 6 denotes an air filter device which is detachably attached to the back surface of the suction port 5a from the outside. Reference numeral 7 designates a first filter, in which a mesh 9 made of synthetic resin threads woven into a net shape is fixed to a synthetic resin frame 8 by ultrasonic welding or integral molding. Reference numeral 10 designates a second filter in which a charged net 11 charged with an electric charge and an activated carbon net 12 with activated carbon attached to the net are made into a layer and integrated by welding or the like, and one side of the snap 13a is attached to the outer periphery of the front surface on the side of the first filter 7. There are multiple locations for this purpose. The second filter 12 has a mesh size smaller than that of the first filter 7 and is arranged at the rear. The charging net 11 is made of charged synthetic resin threads or fibers woven or felt. The activated carbon net 12 is made of synthetic resin threads woven into a net shape to which granular or powdered activated carbon is attached. Here, in order to attach the second filter 10 to the first filter 7, press the second filter 10 against the first filter 7, and insert the other one of the snaps from the front through the net 9 at a position where it contacts one of the snaps 13a.
3b can be easily fixed and integrated by fitting them together. Further, in order to remove the second filter 10, the second filter 10 can be easily removed by removing the other snap 13b. In addition, when the fixed and integrated filter device 6 is attached to the decorative cover 5, the first filter 7 is attached to the air flow (arrow).
Insert so that the filter 10 is at the front and the second filter 10 is at the rear.

According to the air filter device as described above,
Even minute dust particles passing through the mesh 9 of the first filter 7 are attracted to the charged mesh 11 of the second filter 10, so that they can be removed from the air. Furthermore, since large dust particles are removed by the first filter 7, a decrease in the dust removal effect and an increase in ventilation resistance due to clogging of the charging net 11 are suppressed, and the effect can be maintained for a long period of time. Furthermore, since odor in the air is adsorbed by the activated carbon net 12, the air in the room is purified and a more comfortable and healthy living space can be created. Second filter 1 whose effectiveness has weakened due to long-term use
0 can be easily attached and detached by fitting and removing the one side 13a and the other side 13b of the snaps through the mesh 9, so handling is not troublesome. Further, since the second filter 10 is made smaller than the size of the mesh 9 of the first filter 7 so that the entire surface of the mesh 9 is not blocked, ventilation resistance is small and a decrease in air volume can be suppressed. Therefore, even if cooling operation is performed at a relatively low temperature, there is no risk of frost forming on the heat exchanger 3.

〔Effect of the invention〕

According to the present invention, the first filter, which has a screen fixed to the frame, is placed in the front, and the second filter, such as a charged screen with an electric charge or an activated carbon screen with activated carbon attached, is placed in the rear, so that microscopic dust can be removed. Since it can remove odors and odors from the air, the air in the room is purified, creating a more comfortable and healthy living space, and the effect can be maintained for a long time. Also,
According to the embodiment, a plurality of snaps are provided on the outer periphery of the front surface of the second filter with one side facing the first filter side, and the other snap is fitted through the mesh of the first filter. It can be easily attached and detached by fitting and removing the snaps, and does not require much effort in handling. Furthermore, since the second filter was made smaller than the first filter,
This has the effect of suppressing a decrease in air volume and eliminating the risk of frost formation on the heat exchanger during cooling operation at relatively low temperatures.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an air conditioner equipped with an air filter device of the present invention, FIG. 2 is a perspective view of the air filter device of the present invention, and FIG. 3 is an enlarged sectional view of the main part of FIG. 2. . 1... Cabinet, 2... Blower, 3... Heat exchanger, 4... Dew pan, 5... Decorative cover, 6...
... Air filter device, 7... First filter, 8... Frame, 9... Net, 10... Second filter, 11... Charged net, 12... Activated carbon net, 13a
...one side of the snap, 13b...the other side of the snap.

Claims (1)

[Claims] 1. In an air filter device of an air conditioner installed in an air ventilation path, a first filter having a net through which air from the intake port of the air conditioner flows, and a removable device behind the first filter. a second filter having a charged network and an activated carbon network attached to the first filter;
An air filter device characterized by being smaller than a filter mesh.